Feb 03, 2020
Metal eyewear frames generally need to be welded where the temple feet and the lens ring are connected, and where the nose pad and the lens ring are connected. The traditional welding technology is unsightly, the welding seam is large, and the surrounding area will be deformed, so it has been eliminated by many manufacturers.
The laser welding machine is used to weld steel eyewear frames, which is easy to operate, high accuracy, small welding seams, and most importantly, the surroundings will not be deformed.
The laser welding in the eyewear frames is to use high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation is diffused into the material through thermal conduction, and the material is melted to form a specific molten pool.
Laser welding machine for eyewear frames is a new type of welding method. Laser welding is mainly used for welding of thin-walled materials and precision parts. It can realize spot welding, butt welding, overlap welding, and seal welding, Small heat-affected zone, small deformation, fast welding speed, flat and beautiful welding seam, no treatment or simple treatment after welding, high welding seam quality, no air holes, precise control, small focused light spot, high positioning accuracy Easy to implement automation. Filler solder is usually not used, so the fit clearance between parts is less than 15% of the thickness of the finest parts. All parts of the parts must be relatively clean, because the welding speed is fast, and it is too late to burn off the impurities.
Most active metals in eyewear frame laser welding machines require shielding gas for welding, but many alloys can also be welded in air. The input of heat energy and the shape of the solder joint during welding can be controlled by parameters and components, which are respectively conducted in heat conduction mode welding, penetration welding, and small hole welding. The depth of heat conduction welding is shallow and the range is wide, similar to the shape of GTAW or TIG weld. This kind of welding is often used for some small devices, such as and tools, or electronic products such as relay cans and batteries. They need to be smooth and beautiful in appearance.
The depth of the penetration mode welding of the eyewear frame laser welding machine is equivalent to or slightly deeper than the welding width. When welding through the penetration mode, the input heat energy is small, the molten pool is small and deep, and a lower average can be used. Due to the need to maintain pinholes during the welding cycle, pinhole mode welding uses only continuous or super mode continuous lasers. The small-hole welding pool has a high depth-to-width ratio of 6: 1, which is the most efficient welding process. Pulsed, continuous, and super-mode continuous lasers can work in thermal conduction mode. Continuous lasers can be used in penetration mode, while only super-mode continuous lasers can be used in pinhole welding mode.